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30-day free returns · Full refund on unused items




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We proudly offer free shipping on all orders across the United States. Every item in our store is delivered with no additional shipping cost.
When you place an order, estimated delivery times are provided based on product availability and your location. Shipping details will be shown at checkout so you know exactly when to expect your pet essentials.
Please note that delivery times may vary depending on your region and carrier availability. While all orders ship free, we work with trusted logistics partners to ensure reliable and timely delivery for pet owners across the U.S.
30-day free returns. Return unused items in their original condition and packaging within 30 days of delivery for a full refund.
Return shipping is free. Email petlywox@gmail.com with your order number and we send you a prepaid return label. Damaged, defective or incorrect items are also returned free of charge.
Once your return is received and inspected, your refund is issued to the original payment method within 10 business days. Opened consumables, used grooming or hygiene items, custom products, sale items and gift cards are not returnable unless they arrived damaged, defective or incorrect. See our Refund Policy.
Please note that deliveries to certain remote or outlying areas may experience slight delays during busy periods or due to weather conditions. These delays are temporary and may vary depending on the location and carrier operations. We appreciate your understanding and patience.
Meet the Qwakay Rite-Size B replacement cartridge, a versatile choice for Penguin PRO filters. This 10-pack is designed to be compatible with MarineLand Penguin PRO Power Filters 100, 125, 175, and the Original Penguin Power Filter 150, offering a straightforward, ready-to-use solution for ongoing aquarium maintenance. The cartridge blends durable media with thoughtful construction to support clear water and a healthy aquatic environment.
Inside each cartridge, a layered filtration approach combines high-density cotton with coconut shell activated carbon. This pairing provides both mechanical filtration—capturing debris and particulates—and chemical filtration—helping to reduce dissolved impurities that can cloud water. An enhanced media stack, including activated carbon and zeolite, works in concert to improve overall water clarity and quality while maintaining strong flow through the filter.
Designed for regular tank upkeep, these cartridges are intended for replacements every 2–4 weeks, depending on tank size, stocking, and filtration load. In daily use, they help keep debris in check and support clearer water between routine maintenance sessions. With the 10-pack in your kit, you can maintain a steady supply for ongoing filter care without frequent repurchases.
Whether you’re setting up a new tank or refreshing an established system, the Qwakay Rite-Size B cartridges aim to provide a seamless replacement experience. While results can vary with tank conditions, this setup offers a practical option for maintaining filtration efficiency and water appearance over time.
Q: Is this replacement cartridge compatible with MarineLand Penguin PRO filters?
A: Yes, the Rite Size B cartridge fits Penguin PRO models 100/125/175 and the Original Penguin 150 for straightforward replacement.
Q: How often should I replace the cartridges in my filter?
A: We recommend replacing roughly every 2–4 weeks, depending on tank conditions and filter usage.
Full details: Shipping Policy · Refund Policy. Questions? Email petlywox@gmail.com.
Check the exact measurements and package contents before ordering. Read U.S. delivery details and return conditions. For a product question, email petlywox@gmail.com.
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